Evan's place is fantastic. The room is nice and big and fully equipped with everything you might need during your stay in Bangkok.
Evan is always ready to help - he lives in the same building so he was never too far away. If you like dogs, you're in luck; if you don't, I wouldn't worry as they are very gentle and incredibly well-trained.
The area is great too, very close to Lumphini Metro station and Lumphini Park and there are quite a few bars and cafes around.
Would definitely recommend this to anyone staying in Bangkok.